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Global Positioning System (GPS) Accuracies in Eastern U.S. Deciduous and Conifer Forests

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Abstract:

This study determined horizontal positional errors when using C/A code GPS receivers under forest canopies and in varied terrain. Positional errors were evaluated for a total of 18 sites: three sites for each of six combinations of canopy (conifer, hardwood) and terrain (ridge, slope, valley). Ten replicates were collected at each site for each of 60, 200, and 500 position fixes. Differentially corrected positional accuracies from conifer sites averaged 18.4 ft, which was significantly greater than the 14.5 ft observed for hardwood sites. For differentially corrected data, positional errors generally increased from ridgetop to valley positions. - Errors decreased when the number of position fixes was increased. South. J. Appl. For. 20(2):81-84.

Document Type: Journal Article

Affiliations: Virginia Polytechnic Institute and State University, College of Forestry and Wildlife Resources, Blacksburg, Virginia 24060-0324

Publication date: May 1, 1996

More about this publication?
  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Southern Journal of Applied Forestry covers an area from Virginia and Kentucky south to as far west as Oklahoma and east Texas.
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